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Finding the Fourth Proportional to 128,024.76, 191,875.86 and 61,410.36

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Solution

The fourth proportional to 128,024.76, 191,875.86 and 61,410.36 is: 92,038.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,024.76 : 191,875.86 = 61,410.36 : x
  2. Step 2: Convert to fraction form
    128,024.76/191,875.86 = 61,410.36/x
  3. Step 3: Cross multiply
    128,024.76x = 191,875.86 × 61,410.36
  4. Step 4: Simplify right side
    128,024.76x = 11,783,165,637.91
  5. Step 5: Solve for x
    x = 11,783,165,637.91/128,024.76
  6. Step 6: Final answer
    x = 92,038.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.