Home / 137,389.36-189,607.84-86,445.76

Finding the Fourth Proportional to 137,389.36, 189,607.84 and 86,445.76

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Solution

The fourth proportional to 137,389.36, 189,607.84 and 86,445.76 is: 119,301.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,389.36 : 189,607.84 = 86,445.76 : x
  2. Step 2: Convert to fraction form
    137,389.36/189,607.84 = 86,445.76/x
  3. Step 3: Cross multiply
    137,389.36x = 189,607.84 × 86,445.76
  4. Step 4: Simplify right side
    137,389.36x = 16,390,793,762.78
  5. Step 5: Solve for x
    x = 16,390,793,762.78/137,389.36
  6. Step 6: Final answer
    x = 119,301.77

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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.