Home / 128,737.02-177,657.02-71,376.19

Finding the Fourth Proportional to 128,737.02, 177,657.02 and 71,376.19

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Solution

The fourth proportional to 128,737.02, 177,657.02 and 71,376.19 is: 98,499.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,737.02 : 177,657.02 = 71,376.19 : x
  2. Step 2: Convert to fraction form
    128,737.02/177,657.02 = 71,376.19/x
  3. Step 3: Cross multiply
    128,737.02x = 177,657.02 × 71,376.19
  4. Step 4: Simplify right side
    128,737.02x = 12,680,480,881.74
  5. Step 5: Solve for x
    x = 12,680,480,881.74/128,737.02
  6. Step 6: Final answer
    x = 98,499.10

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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.