Home / 130,507,689.72-180,105,233.46-71,774,900.76

Finding the Fourth Proportional to 130,507,689.72, 180,105,233.46 and 71,774,900.76

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Solution

The fourth proportional to 130,507,689.72, 180,105,233.46 and 71,774,900.76 is: 99,051,904.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,507,689.72 : 180,105,233.46 = 71,774,900.76 : x
  2. Step 2: Convert to fraction form
    130,507,689.72/180,105,233.46 = 71,774,900.76/x
  3. Step 3: Cross multiply
    130,507,689.72x = 180,105,233.46 × 71,774,900.76
  4. Step 4: Simplify right side
    130,507,689.72x = 12,927,035,257,948,132
  5. Step 5: Solve for x
    x = 12,927,035,257,948,132/130,507,689.72
  6. Step 6: Final answer
    x = 99,051,904.80

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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.