Home / 130,730.47-180,404.54-74,140.63

Finding the Fourth Proportional to 130,730.47, 180,404.54 and 74,140.63

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Solution

The fourth proportional to 130,730.47, 180,404.54 and 74,140.63 is: 102,312.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,730.47 : 180,404.54 = 74,140.63 : x
  2. Step 2: Convert to fraction form
    130,730.47/180,404.54 = 74,140.63/x
  3. Step 3: Cross multiply
    130,730.47x = 180,404.54 × 74,140.63
  4. Step 4: Simplify right side
    130,730.47x = 13,375,306,250.46
  5. Step 5: Solve for x
    x = 13,375,306,250.46/130,730.47
  6. Step 6: Final answer
    x = 102,312.08

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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.