Home / 130,643,712.56-180,288,312.48-71,105,434.96

Finding the Fourth Proportional to 130,643,712.56, 180,288,312.48 and 71,105,434.96

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Solution

The fourth proportional to 130,643,712.56, 180,288,312.48 and 71,105,434.96 is: 98,125,494.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,643,712.56 : 180,288,312.48 = 71,105,434.96 : x
  2. Step 2: Convert to fraction form
    130,643,712.56/180,288,312.48 = 71,105,434.96/x
  3. Step 3: Cross multiply
    130,643,712.56x = 180,288,312.48 × 71,105,434.96
  4. Step 4: Simplify right side
    130,643,712.56x = 12,819,478,877,094,794
  5. Step 5: Solve for x
    x = 12,819,478,877,094,794/130,643,712.56
  6. Step 6: Final answer
    x = 98,125,494.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.